HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 282

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

P8DDR is initialized to H'E0 or H'F0 by a reset and in hardware standby mode. The reset value
depends on the operating mode. In software standby mode P8DDR retains its previous setting. If a
P8DDR bit is set to 1, the corresponding pin maintains its output state in software standby mode.
Port 8 Data Register (P8DR): P8DR is an 8-bit readable/writable register that stores output data
for pins P8
corresponding P8DR bit is returned. When a bit in P8DDR is cleared to 0, if port 8 is read the
corresponding pin level is read.
Bits 7 to 5 are reserved. They cannot be modified and always are read as 1.
P8DR is initialized to H'E0 by a reset and in hardware standby mode. In software standby mode it
retains its previous setting.
Bit
Initial value
Read/Write
4
to P8
0
. When a bit in P8DDR is set to 1, if port 8 is read the value of the
—
—
7
1
Reserved bits
—
—
6
1
—
—
5
1
269
R/W
P8
4
0
4
R/W
P8
3
0
Port 8 data 4 to 0
These bits store data
for port 8 pins
3
R/W
P8
2
0
2
R/W
P8
1
0
1
R/W
P8
0
0
0